西南石油大学学报（自然科学版）Issue(3)：160-167,8.DOI:10.11885/j.issn.16745086.2015.01.22.01
采空区漏风及残煤瓦斯涌出对采场气流的影响
Effect of Gob Air Leakage and Residual Methane Emission on Mining Stope Flow Field
摘要
Abstract
Based on the investigation of the literatures at home and abroad,and according to the seepage mechanics,rock mechanics,mining engineering and other multi-disciplinary cross,we establish the coal mine goaf gas flow mathematical model with the method of combining theoretical analysis and numerical calculation. By the CFD technology,we study the leakage distribution and gas concentration field distribution of gas concentration and velocity about wind in working face,the scope of dissolute concentration in goaf and between goaf and working face,the relationship between goaf air leakage and air volume in working face,the decay law of air leakage rate velocity along goaf,and determine that the highest concentration of gas is return corner in entire working face,and the highest concentration of gas in goaf is also highest concentration of gas in entire scope. Through the simulation of different air supply volume,we describe the migration trend of gas concentration,the relationship between the concentration of gas and air flow rate of return corner,and also find that the gas concentration gradient is bigger in the air side,increasing the air supply volume can decrease the concentration of gas in return corner,but increases the risk of spontaneous combustion of remaining coal. This paper reveals the goaf air leakage and the residual coal gas emission of the influence law of stope gas flow.关键词
U型通风/采空区/漏风/流场/数值模拟Key words
U type ventilation/goaf/air leakage/convective diffusion/numerical simulation分类
能源科技引用本文复制引用
裴桂红,冷静,刘玉学,潘洁..采空区漏风及残煤瓦斯涌出对采场气流的影响[J].西南石油大学学报（自然科学版）,2015,(3):160-167,8.基金项目
国家自然科学基金 （）
